Snap fastener



Patented Nov. 20, 1928,.

UNITED STATES` PATENT1A OFFICE.

Duns REITER AND vALLAN D. coLBY, er PROVIDENCE, RHODE ISLAND, AssIGNons 'ro RAU FASTENER C0., OF PROVIDENCRBHODE ISLAND, A CORFOBATION OF` RHODE ISLAND.

SNAP FAsTENnR.

Application filed November 5, 1927. Serial No. 231 238.

Due to the relatively sharp edges of the.

fastener flange, undue strains on the fastener frequently result either in tearing thevsame bodily out of the fabric,`or in cutting or fraying the fabric at the fastener edges.

In accordance with the present invention,

we have designed a fastener which overcomes tion in connection with the accompanyingv drawings, wherein- Fig. -1- is a perspective view of the male element of the fastener proper. i

Fig. Q. is a perspective View of the ring which embraces" the flange of the maleelement `to cover up the sharp cutting edge thereof,.the ring in Fig. 2 being shown ben fore it is .bent into its final form..r

the above noted difficulties in that the fabric is firmly lclamped between two round noncuttmg edges, one formed on the rivet head and one on the fastener flange. By virtue of this arrangement, the fabric is firmly clamped, but danger of tearing the fabric, particularly if the latter is loosely woven, and danger of bodily pulling the fastener out of the fabric is entirely obviated.

- Another object ofthe present invention is to' provide a fastener in which undue expansion and consequent permanentdifstortion of the female fastener element is prevented. Preferably, the same means which is used to prevent tearing of the fabric, also serves to positively limit the expansion of the female member or socket, thereby. prolonging the life of the fastener as well as rendering liability of tearing the fabric a negligible factor.

@ther andfurther objects of the invention are to provide a snap fastener of simple, practical construction, which will be rugged, durable and efficient in use, and well suited to the requirements of economical manufacture and convenient application.

lVith the above noted and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of arts, as will be more fully hereinafter set orth and pointed out in the claims. The invention may be more fully understood from the following descrip- Fig. 8 is a sectional view showing the ring applied to the male element.,

Fig. 4 is a sectional view showing the male element with its protectivev ring secured to a fabric anchorage bythe use of a rivet, the fabric being clamped between the rounded non-cutting edges of the ring and rivet head.

Fig. 5 is a perspectipe View of the ring which is used on the female element.

lFig. 6 is a view of the female element before the ring is applied.

Fig. 7 isa view in section showing the ring applied to the female element. v

Fig. 8 is a view similar to Fig. 4 showing the female element secured to a supporting fabric by the vuse of the rivet.

The male element of the fastener illustrated in Fig. 1 and the snap fastener element illustrated in Fig. 4 are of conventionalconstruction. The male fastener elementproper is preferably of integral formation including a disc or flange 1() from which the stud 11. is pressed upwardly. This stud is of an exterior shape to vconveniently snap into a Vsuitably prepared socket member, and the head of the stud is formed with a depression at 12, the base of this depression being Vapertured at 13 (Fig. 4) for the reception of the hollow shank 14 of a rivet, which rivet is provided with a rela-tively wide head 15 -havi ing rounded edges to prevent cutting of the fabric 16 clamped between the fastener element and rivet. The conventional manner of applying the rivet is to punch it through the fabric and spin the mouth of the shank over on to the bottom wall of the depression l2 as indicated at 17 in Fig. 4.

. As thus far described, the construction may be entirely conventional, the present invention being concerned with the provision of an annular or ring-like member desigated generally at 18 and illustrated separatelyf in Fig. Q. This member includes an annulus 19 slightly larger external diameter than the flange 10, and an upstanding flange portion 20 integral with theu l'reeedge of the an Y nulus.

To apply this ring to the fastener element.

of F ivf. 1,1trhe fastener element is dro `pod into place resting ou the annulus 19 an the .Harige 2() is rolled or spun over the flange 10 as seen in Fig. 3, thereby providing. a protective rolled edge which covers and conceals the relatively sharp edge ofthe ilangle 10.

By virtue of this arrangement, When the fastener i'sapplied to the fabric' 16 by the method above described, thefabric isfclamped between therouded edge of `the rivet head l5 and the rolled' ed eprovided by the ring 18, and there isno" anger either of tearing i thei fabric or of cutting or iraying it adja- `centrthefasteifier. `Infioose woven fabrics this ckinstrctioli is particularly important,

in that it preventie cutting, frayilig, or bodily tearing out of the= fastener when an undue strain is imposed'thereon;

In' Figs. 5i to 8 inclusive, We have illus- A trated@ asimilar arrangement used in connection with the femaleor socket member which coaets with Vthe stud 11i.` The conventional socket member is shown in Fig. 6 including a substantially @upf-shaped element 21 having `an openingQQf in itebottoln for the reception shank-of the stud throughthe opening 22 and splnnirig'it ovemas in Fig. 8.

Im accordance with the present invention i however, We have provided a' supplemental iingmember illustrated in nFig. 5,vvhich ring member is'in the nature of ai tapering annulns 25 having at its Wider end an inturned` rolled bead 26. The minimum diameter of the stimulus 251i'sappfroximately the same as theinaximum diameter of the bottom of the socket 21 and the ring is applied by forcing it home over' the` bottom of the socket until thosmafller edge* of the" ring strikes the bead 23 (see Fig. 8). In this position, the bead 26 provides a rounded annular surface coacting with the rolled edge of the rivet 15 to clamp tfhe fabric l6` and revent "tearing thereof; whilethe smaller e ge of the annulus 25 serves to positively limit the spreading ofthe socket as the stud member 1l is inserted intothe socket. f

lBy this arrangement, undue distortion of the socket member or `female element is eliminated, and the beaded ring 25 serves the dual function of preventing tearing rof the fabric and prolonging the life of the socket.

Obviously, variousV changes and alterations might be'made inthe general form and arrangement of the parte described.vv'ith'outdeY parting from the invention. `Hence We do not Wish to limit ourselvesto the details seti forth, but shall kconsider `ourselves at liberty to make su chchangee and alterations as fairly pend'ed' claims.'

` We claim:V Y

fallr within the spiritl and' scopeo the ap`` 11. A female snap fastener element includ-` ing a cup shaped body, beaded and split at ite-r mouth to provide a' spring socket .having an opening in its bottom, a* headed rivet, the

hollovvv shank ol' vvhich'is passed through theV ol'aening and turnedvv over against the bottom? of the cup to' secure the body to a'fabric lying between the rivet head and body, a ring encircling the cup limitin expansion of the socket and having arolle clamp the fabric.

2. A female snap fastener element comprising a cup-shaped bod having a beaded rim and split at its'mout to provide a spring socket having an opening in its bottom, a headed rivet having a. hollow shank, the head haa/ing a rounded edge and the shank passed through the opening'and upset against the .bottom of the cup, and a'ring having one of its edges rolled, said ring being mounted on:

the body in engagement with the head of the rim with its rolled edge projecting beyond the bottom of the socket of said body.

edge spaced from the body andgcoacting with the rivet head' to Signed at Providence, in the county of I Providence and State of Rhode Island, this second day of November, A. D. 1927.

LUES REITER. ALLAN B. COLBY. 

